[Bug 1010045] Re: 12.04 hangs on shutdown deconfiguring network interfaces

[Andreas van der Locht]

Hi,
I have the same problem with one KVM guest-system using an iscsi target.
The problem cannot be solved with unmounting the iSCSI target manual, before shutdown.

#dpkg -S /etc/network/if-down.d/*
open-iscsi: /etc/network/if-down.d/open-iscsi
resolvconf: /etc/network/if-down.d/resolvconf
ifupdown: /etc/network/if-down.d/upstart

The system is configured with 3 bridge interfaces.

#/etc/init.d/networking -v

*Deconfiguring network interfaces...
Configuring interface eth0=eth0 (inet)
run-parts --verbose /etc/network/if-down.d
run-parts: executing /etd/network/if-down.d/open-iscsi
* Disconnecting iSCSI targets
[ 1232.432014] connecting7:0: ping timeout of 5 secs expired
.....
and so on ...

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https://bugs.launchpad.net/bugs/1010045

Title:
  12.04 hangs on shutdown deconfiguring network interfaces

Status in “ifupdown” package in Ubuntu:
  Incomplete

Bug description:
  When shutting down the 12.04 guest, it hangs on "Deconfiguring network
  interfaces...", when there are multiple networkcards.

  The system is going down for halt NOW!
   * Stopping web server apache2                                           [ OK ]  ... waiting 
   * Stopping Bacula File daemon...                                        [ OK ] 
  Checking for running unattended-upgrades: 
   * Running nssldap-update-ignoreusers...                                 [ OK ] 
   * Stopping Name Service Cache Daemon nscd                               [ OK ] 
   * Stopping Postfix Mail Transport Agent postfix                         [ OK ] 
   * Stopping ftp server proftpd                                           [ OK ] 
   * Asking all remaining processes to terminate...                        [ OK ] 
   * All processes ended within 2 seconds....                              [ OK ] 
  rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
   * Deconfiguring network interfaces...                                          

  <hang>

  We only have this issue when a vm has multiple network cards assigned.
  When we do a manual "/etc/init.d/network stop; halt", the vm shuts down like expected.

  dpkg -l | grep ifupdown
  ii  ifupdown                         0.7~beta2ubuntu8              high level tools to configure network interfaces

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